*3.2. Types and Quantity of PLES Classification of the Islands in the Western Sea Area of Guangdong Province*

Through the result of PLES classification, the number of PLES types on a single island range between 6 and 19. The PS types divided from the Landsat images include paddy field, dryland, salt pan, aquaculture pond, industrial land, tea garden, reservoir, pond, and ditch. The ES types include forestland, shelterbelt, mangrove forest land, wetland, beach, rock foreshore, mudflat, and stream. The LS types include rural residential land, urban residential land, harbor land, bare land, and highway land. Some secondary types of PLES are distributed only on certain islands. For example, in the PS, the industrial land and salt pan only appear on the sedimentary islands, a vast majority of irrigation ditches are distributed on the bedrock islands, and tea gardens are distributed only in a small area on the bedrock islands. Most mangrove forests and mudflats in the ES are distributed on the sedimentary islands. Only a few streams are distributed on the bedrock islands, while rock foreshores are mainly distributed in the relatively large area on the volcanic islands (Figures 4–6).
